BOTTOM PART OF TEMPLATE 

 (Applies to third and all succeeding lines of listing) 



ENTRY DESCRIPTION OF FIELD 



Messenger time 



HR. l/lO Time (CMC) of release of messenger, in hour and 



tenths of hour, at observed levels. If a 

 multiple cast series extends past midnight, 2k 

 hours are added to the cast time(s) of the casts 

 that are taken during the next day. 



OR 



Cast No. Number of cast (not printed when messenger time 



is given). 



Card Type OBS - Observed (sampled) level. 



STD - Standard interpolated depth. Interpolation 

 of temperature, salinity, and oxygen computed by 

 a modified 3-point LaGrange formula . 



•^STD - Standard depth values interpolated by the 

 originator or hand- interpolated by NODC. 



LIT - Interpolated standard depth values; origi- 

 nal observed values not available. 



NOTE: When a valid observed level coincides with 

 a standard depth level, both the OBS and 

 STD lines will appear. 



Depth (m) Depth of sample (or standard level depth) in 



meters. A numeric entry of tenths of meters 

 appears as the fifth digit of the depth field. 

 Postscript T indicates a depth at which both 

 a protected and an unprotected thermometer were 

 used. Subscript Q indicates that the value is 

 marked doubtful by the originator. A value 

 designated as potentially implausible by NODC 

 is marked with a P. Z indicates uncorrected 

 'Vire out" depth. 



2k 



